Peptides
Your Trusted Partner for Complex, High-Quality Peptide R&D
We combine synthetic expertise, design insight, and advanced analytical support to deliver high-quality peptide and conjugate development.
From linear and cyclic peptides to knots, macro- and multicycles, stapled frameworks, and complex conjugates, we enable biotech and pharma partners to advance their programmes with speed, confidence, and control.
- Overview
- Integrated capability throughout the peptide development lifecycle
- Dedicated infrastructure for peptide development
- Connected workflows for peptide development
- Why choose us
- In our own words
- FAQs
Peptides are one of the fastest-growing and exciting therapeutic areas, but they are steeped in complexity. Solubility, aggregation, and stability challenges demand deep chemical understanding and analytical precision.
At CatSci, we bring decades of peptide expertise to every project. From hit finding through lead optimisation and early sequence design, to the scale-up of complex constrained peptides and synthesis of peptide–oligonucleotide conjugates, our scientists deliver tailored solutions. Our workflows also include custom N- and C-terminal modifications and C-terminal amide conjugates.
And if your project involves non-natural amino acids, unusual modifications – from sugars to cryptophanes – or difficult sequences, we’ll design a bespoke approach.
Dedicated Infrastructure for Peptide Development
Connected Workflows for Peptide Development
Why Choose Us
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Led by experts with decades of experience with the most complex scaffolds
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Specialist experience in constrained, stapled, and complex peptide synthesis
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Seamless workflow between chemistry, purification, and bioscience
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UK-based, transparent, and collaborative partnership model
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Proven track record delivering purity, precision, and performance
- Supporting biotechs, start-ups, large pharma and academics worldwide with bespoke peptides
Frequently Asked Questions
CatSci provides end-to-end peptide development services covering design, synthesis, purification, and analytical validation. Our expertise spans complex and constrained peptides, conjugates, and modified scaffolds. Using manual and automated SPPS platforms and advanced analytical tools, we deliver high-quality, scalable peptides ready for preclinical and clinical development.
Yes. CatSci specialises in complex peptide synthesis, including cyclic, stapled, and conjugated peptides. Our scientists use advanced SPPS and purification workflows to address solubility, aggregation, and yield challenges. We tailor chemistry, analytics, and purification strategies to each sequence to ensure purity, performance, and scalability.
CatSci ensures peptide purity through integrated analytical and purification expertise, including LC-MS, Q-TOF, and preparative chromatography. All methods are developed in alignment with regulatory guidelines, ensuring data integrity and regulatory compliance. Our embedded purification capabilities deliver industry-leading quality and reproducibility for every batch.
Absolutely. Whether it’s a difficult sequence, a custom modification, or an unusual scaffold, our team has the expertise and infrastructure to find a way forward.
From linear to stapled, cyclic, knotted, multi-and macrocyclic peptides, we thrive on complexity. If your project involves solubility issues, aggregation, or challenging synthesis routes, reach out to our experts — we’ll design a bespoke chemistry, purification, and analytical strategy to meet your goals.